YG2078: Ships Via Small Parcel Ground This item features: Hardened steel shackle for extra cut resistance Dual deadbolt locking for resistance to prying Corrosion resistant body for caustic, corrosive and salty Environments Provide tens of thousands of key changes Rekeyable for ease of replacing cylinder or shackle Shackle Material: Hardened Steel Body Material: Brass No. of Pins: 5 Combination/Keying: Keyed Different Model Code   Model Description AA Shackle Diam:1/4 in, Shackle Length:1 1/16 in, Shackle Inner Width:25/32 in, Body Width:1 9/16 in AB Shackle Diam:3/8 in, Shackle Length:1 1/2 in, Shackle Inner Width:29/32 in, Body Width:2 in AC Shackle Diam:5/16 in, Shackle Length:1 3/16 in, Shackle Inner Width:29/32 in, Body Width:1 3/4 in